Condenser.



A. K. SLOAN.

CONDENSER.

APPLICATION FILED AUG.7.1912.

1, 1 50,895. Patented Aug. 24, 1915.

5 SHEZTSSHEET 2.

INVENTOR Jaw/ 627,

A. K. SLOAN.

CONDENSER.

APPLICATION FILED AUG.7. 1912.

1, 150,895. Patented Aug. 24, 1915.

5 SHEETSSHEET 3- WITNESSES IIVVENTOI? fl/m am,

ATTORNEY A. K. SLOAN.

CONDENSER. APPLICATION FILED AUG-7| I912.

1,150,895, Patented Aug. 1915.

5SHEETS EE 4.

FiE' 5 AUGlJSTUS KELLOGG BLOAN, OF BROOKLYN, NEW YORK.

CONDENSER.

Specification of Letters Patent.

Patented Aug. 24, 1915.

Application filed August 2, 1912. Serial lilo. $18,798.

To all whom. it may concern Be it known that l, Aosusros KnLLooo Show, a. citizen of the United States, and e resident of Brooklyn, in the county of Kings 5 and State 0:5 NGNVYOK'l K, have invented. certain new and useful improvements in Con densers, of which the following is s specification.

The invention relates to electricsl con densers or high-potential accumulotors more particularly to a condenser of edjustable capacity of a type suitable for use with high potential electric currents such us are used in radio transmission; transmitters and receptors.

More specifically, it pertains to a condenser, the capscity of which may be varied and adjusted with both accuracy and facility.

The objects of the invention are to provide a condenser of extremely simple and compact form having a maximum cspscity for the materiels used and inciole telly ecljustahlo to various capacities with little on no liability ofbrcskag'e or dissrrsngement.

A further object is to provide s condenser having, a plurulity-of units so arranged in conjunction with a self-healing dielectric as to give a maximum of surface as to the electrodes with a minimum of space occupied; thus providing s portable resdily justuble device.

' A still further object is to provide condenser having; its units so arrsnged that they may be used for various purposes sud msy be adjusted to various capacities by 9. quick general adjustment and a subsequent fine i '1 adjustment.

Referring to thedrawings: Figure l is s vertical sectional view through the device. Fig. 2 is a view in elevation in reduced scale as compared with Fig. 1, showing the scales and calibration for securing the accurate od justments, 3 is a cross-sectional plan view through the stationary electrode with the movable electrode removed. Fig. l is vertical section through the adjusting de vice. Fig. 5 IS a plan view of the nuts of 1 the adjusting device, and base with the cop removed, illustrating the adjusting nuts in closed position. Fig. 6 is a plan view in reduced scale as compared with Figs. lend Q. illustrating the base, supporting plates snol i spindle for the electrodes. Fig. 7 is a similar plan view with the supporting plates and 55 appurtenant parts removed. Fig. 8 is c perspective view of the variouselements'of the adjusting device illustrating at A the cap; at B the adjusting nuts and springs; at C, the housings and at D the shell of the casing. 9 illustrates in plan the casing adjusting nuts, sud appurtenant parts, sci

nuts being" in engagement with the threaded. spindle. 10 illustrates in unssssmbleol position the various elements of the structure. the ports being shownin perspective.

It has been heretofore common practice to use lined or variable condensers with paper, paraliin, l. cs, fiber rubber and other dielectries. To obtain the cdvsntsges of using the atmosphere s dielectric, the rotsry piste condenser hos been devised and hes introduccd the weakness of pistes. end their tendency to warp or short circuit, thus vary ing the totol cspacity oi the instrument in s manner which renders it useless st times.

cylinders as the electrode instead L to, rigidity and compectness is gai ed a cl the dissdvantsges of the plots ore ed end the cdvcntuges retained out introducing new faults.

. it one the principal objects of the present invention to provide at device I vnig; its electrode so srrnngcol there will he little or no liability of one} i or creaking down end at the some time providing s very compact device which cs vssclily adjus ed to various capacities and wherein the sdjustment may be made almost instantaneously within certa n olegrees end may he uickly adjusted with the highest degree of accuracy.

In general, the device consists of chess or support upon which is moimted s stationery electrode comprising a series of nested tubulsr members cooperating with wh ch are u similar set of nested tubular members suported by u spindle and connected with the spindle through on adjusting device wh ch permits as quick insertion or removal of the members with reference to the stationary elements and also provides for a delicutesoljustment thereof.

Referring to the drawings, the numeral 1 denotes s loose or support preferably mounted upon rest 2 and having an internal chomhcr'or opening 3. U on the base is on insulating plate 4. uitably mounted upon this insulating plate 4 is e spindle supocrting plate 5 centrally arranged in'w hich is a s mdle 6, the upper end of which is provide with a coarse-pitch screw thread 7.

Mounted upon the spindle supporting plate 5, though completely insulated therefrom by the insulating members 8, 9, is a plate 10, which acts as the direct sup ort for a series of tubular cup-shaped mem ers 10, 11, I2, 13, 14, and 15, gradually decreasing in diameter and nested one within the other. Thesev elements are evenly spaced with reference to each other and are insulated from the spindle 6 and its plate and securely brazed or secured to each other and to the stiff supporting plate 10. This structure forms the stationary electrode of the condenser. The plate 10' is securely held to the plate 5 by suitable screws or other device 16 insulated as at 17 from the plate 5 and the plate 5 is secured to the base 1 by suitable screws 18. -A plug 19 serves as an additional support for the spindle 6 and has the added function of forming a guide for the innermost members 20 of a series of cuplike tubular members 20, 21, 22, 23, 24, 25, and 26. This series of cup-like members are, as in the case of the members making up the stationary electrode 10 to 15 inclusive, equally spaced and so arranged that the innermost member 20 projects within the innermost member 15 and the outermost member 26 projects ,over and about the outermost member -10 of the stationary electrode. The members 20 to 26 are suitably secured to each other and to a plate or cap 27, this structure forming the movable electrode of the condenser.

The outer member 10 of the stationary electrode made up of the cup-like elements 10 to 15 inclusive, has marked thereon a scale as is clearly shown in Figs. 2 and 10, said scale extending axially of the shell 10. The outer member 26 of the movable electrode having the elements 20 to 26 is provided is so divided in scale that practically a micrometer adjustment may be secured between the stationary and movable electrodes.

The adjusting device for the movable elec res and igs. 1, 4, his adjusting device controde is shown in the various fi more particularly in detail in 5, 8, 9 and 10.-

. sists of a holder 28 referably of metal having a transverse sli e-way 29 formed therein and with an extended hollow-s indle 30, upon which is arranged a s uare or an larly formed section 31 an an externa ly screw-threaded section 32. The extension has an opening therethrough corresponding in size and form to an opening 33 in the top of the holder, these openings being of a size to snugly fit about the supportmg spindle 6. The holder 28 is completely inclosed by an insulating casing 34. This casing has a central opening 35 through which the extension 30 may pass and is provided with transverse openings 36, 37, which register with transverse opening 29 extendin through holder. A cover-plate of insulating material 38 having a central opening 39 and transverse openings 40 fit snugly over the top of the holder 28 and is secured in any suitable manner as by screws to the main insulating casing.

Within the holder 28 and arranged in opposed positions, are jaw-members 41, 42, which, when in assembled position have a close-sliding en agement with and fill the opening 29. T ese jaw-members, as illustrated, each have at their outer end an insulating member 43 to protect the operator and are cut away as at 44 so that the threaded jaw 45 of the jaw member 41 rests within the opening 44, of the jaw member 42 and the threaded jaw member 46 of the jaw member 42 rests within the opening 44 of the jaw member 41. These two threaded jaw members 45, 46, together, form a nut for engaging the thread 7 .of the spindle 6 and are normally held in close engagement therewith b springs 47,, which are held against disp acement. in depressions 48, 49, formed respectively on the inner wall of the openings 44 and the outer ends of the jaw members. A stop pin or screw 50 passing through openin s 51 in the holder prevents a movement 0 thegjaws beyond definite oints. The 0 eration of the nut and adjusting device is apparent. A simultaneous depression with the thumb and fore-fin er upon the sliding jaws carries the threa ed jaw members out of engagement with the threads 7 of the spindle 6 and thereupon the plate 27 and movable electrode made up of the cup-like tubular members 20 to 26 in- 'clusive may be raised or lowered with reference to the stationary electrode, thus decreasing or increasing the capacity value of the device. This permits a quick adjustment of the movable electrode with reference to the stationary electrode within the limits of the scale u on the stationary electrode member 10. f it is desired to secure a finer adjustment, a rotation of the adjusting device after its threaded nuts are in engagement with the screw-threads 7, will provide a means of extremely delicate vertical adjustments of the movable electrode.

The holder I 28 is completely insulated from the operator by the cap 38 and shell 84 although it is in electrical connection with the spindle .6. Insulatin washers 52, 53, the latter having an angu arly formed perforation 54 fitting about the angular section 31 of the extended portion secures a further insulation. A nut 55 engages the threaded end 32 of the extension of the holder and securely clamps the parts in osition with reference to the plate 27-.

ith this arber of tubular members large capacity may be thus pro elements of electrode are c t slur co rangement, the entire exterior of the adjustlarly formed parts 31, 53 in confirmation with an angula-rly formed opening 56 formed through the plate 27 provide a convenient means for turning the movable electrode about the spindle 6.

The or supportl bears suitable binding pos s 57, 58, one of which is suitably connected as through the screws 16 with the static lory electrode, the other being connected 1 suitable metallic conductors witb the spindle supyorting cts 5 bears the moyaole electrode From the cbove it will be movable electrode may, tliroux ing device, qui y moved 1 position with reference to t electrode merely by releasin nut sections rom spi ie lowering so? lectrode be further acjwted to minute cg tating some ugh the s" after the thread nuts are in engagement slob the screw spindle it is also apparent so or to suit the exigencies of quirement and that cond pyinga minimum of space. il.

like form, they may be arr sembled with great accuracy or. this tubular form the element of against buckling or warping with c plate condenser would bring the elements of the mo ableand stationary electrode into varyinc conditions of oroximityi Obviously, the. details of the structure might be varied to a great degree without departing from the spirit or intent of the invention which contemplates a simple and compact device having a maximum of capacity, ortabllity and eficiency with features oi" quick ad ustment for ordinary changes of capacity combined with a'fino adjustment for more exact values oi cepacity.

l Vhat I claim as my invention and desire to secure by Letters Patent is:

l. A condenser comprising a base or support, a plurality of cup-bin tubular me tallic members of difierent diameters, all having their bases in electrical connection, said cups nested one within the other and forming one electrode, a series of similar cup-shaped tubular members nested one within the other, all having their bases electrically connected-and forming a second electrode, the members of said second electhe stationary a stationary electrode, an adjusting spindle extending tberetbrough, a plurality of similar tubular cup-like members arranged one within the other and having their bases united electrical contact and adapted to depend between the tubular members of the stationary electrode and an adjusting device operative connected with said tubular m mbers adjusting spindle whereby tr members, maybe moved axially lcrence the stationary tubular riser comprising a base or sup- 1 onary electrode embodying a of metallic tubular members all nnection spaced wit refer .1 l en or, a sucpcrtlng spindle in- "Ls- ,L-Y 30in, a plurality oi tubular he upon said nd adapt erticn in the sooces between the one stationary cl. trode, adjust "1C9 permittinga rec movement of members, a ong t e spindle M to the adc adjusting demile... u a device of the character described, c base or support, a stationary electrode mounted there n, said electrode comprising plurality o; bular metallic members arranged one Witoin the other in electrical contact and evenly spaced from each other, a movable electrode comprising a plurality tubular members arranged one within the other electrical contact and adapted for insertion spaces between the tubes of electrode, a spindle extending through the stationary electrode supporting said movable electrode and an adjusting device intermediate the electrode and spindle, said adjust ng" device permitting a free axial movement of movable electrode upon its release from tbs spindle and providing upon rotary movement a fine adjustment.

5. A condenser comprising a base or support, a stationary electrode embodying a plurality of tubular metallic members all in electrical connection and concentrically arranged one within the other, a movable electrode comprising a plurality of slmilar tubulor metallic members centrally arranged one within tlie other all in electrical contact and adapted to be inserted between the tubular members of the stationary electrode,

lo and pen. itting further a supporting spindlefor the movable electrode extending through the center of the stationary electrode and having a screwthread and an adjusting device connected with the movable electrode and having threaded jaws adapted to engage and disengage the threads of the spindle and an insulating casing for said adjusting device and appurtenant parts.

6. A condenser comprising a base or support, a stationary electrode embodying a plurality of tubular metallic Irembers concentricallv arranged one within the other and in electrical connection, a movable electrode comprising a plurality of similar tubular members centrallv arranged one within the other and adapted to be adjustabl inserted between the tubular members 0 the stationary electrode, a supporting spindle forthe movable electrode extending through the stationary electrode and having a screwthread, an adjusting device comprising a metallic part having movable threaded jaws adapted to engage and disengage the threads of the spindle and an insulating casing completely inclosing saidbody-part.

7. A condenser comprising a base or support, a stationary electrode embodying a plurality of metallic tubular members in electrical contact concentrically arranged one Within the other, a movable electrode comprisin a plurality of similar tubular members in electrical contact centrally arranged one within the other and adapted to be adjustably inserted between the tubular members of the stationary electrode, a stationary supporting spindle for the movable electrode extending through the stationary electrode and'having a screw-thread, an adjusting device embodying a bod -part secured to the movable electrode an provided with opposed threaded jaws adapted to engage the threads of the spindle, said jaws being movable within the bodv-part to release the spindle, resilient means for normally holding said aws in engagement with said spindle and lnsulation inclosing the body-part and jaws.

8. A condensercomprising two electrodes, each consisting of a series of metallic tubular members arranged one within the other andelectricall connected, the tubular members of one eiectrode being interposed between the tubular members of the cooperating electrode, means for insulatin one electrode from the other and an'adjustmg device for providing an axial and rotary adjustment of one armature with reference to the other.

9. A condenser comprising two electrodes each consiting of a series of metallic tubular members arranged one within the other and each series electrically connected, the tubular members of one electrode being interposed between the tubular members of the cooperating electrode, means for insulating one electrode from the other, a scale axially arranged along one electrode, a scale arranged about the periphery of the cooperating electrode and an ad usting device permitting a free movement of one electrode with reference to the other for the axial scale and a rotary movement for the peripheral scale.

7 A. KELLOGG SLOAN. Witnesses:-

MARY L. Bnoormn, M. BURLEY. 

